Process chain; BI 2004s; Decision Between Multiple Alternatives

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Hi all

I am trying to use one of the new features in BI 2004s process chains. The feature is the process type: "Decision Between Multiple Alternatives"

Within this process type there is a formula builder, that includes three new functions in the [Process Chain] category:

PREDECESSOR_PARAMETER

PROCESS_PARAMETER

PROCESS_VALUE_EXISTS

Perhaps I am not looking in the right place, but I have so far not been able to find any documentation on how these are used; like simple descriptions, or examples of input parameters, and expected output.

The formula function that I am interested in using is the PREDECESSOR_PARAMETER. However when I attempt to use in the formula builder, I get a "Process type not usable" message and I can not populate the input parameters of the formula.

Has any one had any experience in using this new process type, and have you managed to get it working ?

Many thanks

John